Myths vs facts: MTHFR and skin aging

MTHFR variants (e.g., C677T) are often linked to skin aging in consumer DNA reports, but the evidence is weak. Mechanistically, elevated homocysteine might affect collagen cross-linking, but no robust clinical studies confirm that MTHFR polymorphisms directly cause premature skin aging. Most claims are based on marketing or speculative extrapolations from small studies. Your actual skin aging is dominated by UV exposure, smoking, diet, and lifestyle. A DNA test for MTHFR is not a reliable predictor of skin health. Focus on proven anti-aging measures: sunscreen, antioxidants, and healthy habits.